Which gases is unique to planet earth?

Earth's atmosphere is roughly 78 percent nitrogen and 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases. Nowhere else in the solar system is there an atmosphere loaded with free oxygen, which is vital to one of the other unique features of Earth: life.

oxygen and carbon dioxide are unique gases to planet earth..

every el niño cycle is different. every year.

d we did this already